CN102453107A - Method for preparing pectin from orange peels - Google Patents
Method for preparing pectin from orange peels Download PDFInfo
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- CN102453107A CN102453107A CN2010105290178A CN201010529017A CN102453107A CN 102453107 A CN102453107 A CN 102453107A CN 2010105290178 A CN2010105290178 A CN 2010105290178A CN 201010529017 A CN201010529017 A CN 201010529017A CN 102453107 A CN102453107 A CN 102453107A
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- pectin
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- Polysaccharides And Polysaccharide Derivatives (AREA)
- Jellies, Jams, And Syrups (AREA)
Abstract
The invention discloses a method for preparing pectin from orange peels, comprising the following steps: (1), preprocessing orange peels; (2), extracting; (3), filtering; (4), concentrating; (5), performing ethanol extraction; (6), filtering; (7), drying, crushing and sifting the peels to obtain the finished products. The method has characteristics of easy material availability, low price, high economical benefit, low ethanol loss and low production cost.
Description
Technical field:
The present invention relates to a kind of preparation method of pectin, particularly a kind of method for preparing pectin from orange peel.
Background technology:
Pectin is powdery substance, and is yellow or white, and odorless is tasted the sense of tool thickness.Can be dissolved in 20 times of water and generate viscous solution, be insoluble to alcohol and common organic solvents.If can be then very easily soluble in water with infiltrations such as alcohol, glycerine or syrup earlier, stable under acidity.Pectin can be used for making jam, jelly or gluey food, also can be used as foodstuff additive, microbiological culture media and protective material etc.
Contain many chemical compositions in the orange peel; Can extract multiple fine chemical product; Wherein pectin content is very high, is generally about
.Pectin is vegetable jelly, belongs to polyose, is present in the cell walls of leaf, stem, root of higher plant, adheres to each other with cell, and especially the content of fruit and leaf is more.China south abounds with citrus, and orange peel is the desirable feedstock of producing pectin.
In the existing technology, be that feedstock production pectin method comparatively commonly used has salting-out process with the orange peel.Salting-out process prepares that pectin comprises raw material processing, acid extraction, saltouts, desalination and drying and other steps.Salting-out process prepares pectin in removing pectin salt during metals ion, and the alcoholic acid usage quantity is bigger, and ethanol waste and its usage quantity positive correlation, therefore, comprehensive cost is than higher.
Summary of the invention:
Be to solve the deficiency of prior art, the invention provides and a kind ofly prepare the method for pectin from orange peel, this method is the pure precipitator method, and its ethanol waste is less, and cost is lower.
The present invention is achieved in that the method for preparing oxalic acid from wood chip, comprises the following steps:
(1) tangerine peel pre-treatment
Millimeter is big or small natural air drying, selected citrus peel meal to be broken to
; About 40 minutes, make its suction softening with
hot-water soak; In boiling water, soak
again after draining water minute; Go out behind the enzyme orange peel constantly stir wash with flowing water down to washing lotion approaching colourless till.
(2) extraction
Get 100 orange peels handled well of gram, place 3000 milliliters Glass Containers, add 1500 ml tap waters, add 0.5% trisodium phosphate of the water yield again; Under constantly stirring, the pH value of regulating extraction liquid with the mixing acid of hydrochloric acid+0.5% phosphoric acid; Temperature is controlled at about
; Extraction is 30 minutes when adjusting extraction liquid pH value is
; Re-adjustment is 2.5 o'clock to the pH value later on, continues extraction 30 minutes.
(3) filter
After extraction finishes extraction liquid is sent into suction filtration or filtering equipment filtration; The zeyssatite of adding 1% is made flocculating aids during filtration, filters the back and just can make water white pectin dilute solution; Discard filter residue.
(4) concentrate
The filtrating that filtration is obtained places vacuum concentrating apparatus, under 75 ℃ of temperature, concentrates.
(5) alcohol is analysed
In the industrial ethanol is added to the spray means well concentrated and cooled to room temperature pectin solution, the control ethanol content
, stirring constantly.
(6) filter
Pectin-alcohol mixture is sent into suction filtration or filter-pressing device and is filtered after the short period of time leaves standstill.Filter cake (pectin) is inferior with 80% ethanolic soln washing
; Use 95% washing with alcohol
inferior again, press dry after washing.
(7) dry, pulverizing
The pectin that filter is good places vacuum drier dry in about 45 ℃, is dried to moisture and is less than at 7% o'clock, can pulverize, and crushed material is crossed 0.28 millimeter aperture sieve and got product.
Operations such as in the preparation process, alcohol is analysed, filters, washed, drying should be carried out in encloses container or environment as far as possible, to reduce the ethanol loss.
Principle of the present invention is: the pectin in the orange peel, and major part exists with the pectin substance form, can it be hydrolyzed to soluble pectin with diluted acid, adds a certain amount of ethanol again, and pectin just can be separated out from solution, through separating, be drying to obtain finished product.
The effect of major ingredient is following among the present invention: mandarin orange skin short of money is a main raw material; Hydrochloric acid is extraction agent; Sodium pyrophosphate is the extraction auxiliary agent; Phosphoric acid is extraction agent; Zeyssatite is flocculating aids; Ethanol is that alcohol is analysed agent.
Prior art of the present invention is compared and had the following advantages: raw material is easy to get, and is cheap, and economic benefit is high; The ethanol waste is less, and cost is lower.
Embodiment:
Below in conjunction with embodiment, the present invention is made further detailed description, but does not constitute any restriction of the present invention:
Embodiment: prepare the method for pectin from orange peel, it is characterized in that it comprises the following steps:
(1) tangerine peel pre-treatment
Millimeter is big or small natural air drying, selected citrus peel meal to be broken to
; Use
hot-water soak about 40 minutes; Make its suction softening, remove impurity such as carbohydrate, bitter taste and acid, salt; In boiling water, soak
again after draining water minute, to reach the enzyme purpose of going out; Go out behind the enzyme orange peel constantly stir wash with flowing water down to washing lotion approaching colourless till.At this moment, the pericarp water regain is about own weight
doubly.
(2) extraction
Get 100 orange peels handled well of gram, place 3000 milliliters Glass Containers, add 1500 ml tap waters, add 0.5% trisodium phosphate of the water yield again; Under constantly stirring, the pH value of regulating extraction liquid with the mixing acid of hydrochloric acid+0.5% phosphoric acid; Temperature is controlled at about
; Extraction is 30 minutes when adjusting extraction liquid pH value is
; Re-adjustment is 2.5 o'clock to the pH value later on, continues extraction 30 minutes.
Extraction is the key that pectin is produced, too high pectin depolymerization, the reduction pectin gelling ability of causing easily of extraction temperature.Temperature is low excessively; Then can prolong the extraction time; Cause the undue degreasing of pectin, generally be advisable with
.The extraction time is short, and extraction is incomplete, and overlong time then can cause pectin degrading, is difficult to obtain high-quality pectin.The extraction time minute is advisable with
.
The pH value of extraction is high, and the gelling ability that obtains pectin is strong, but pectin yield is low.When the pH value greater than 3.5 the time, just be difficult to obtain pectin.The pH value is low, and pectin yield improves, but downgrade.In extraction process, the pH value of system can change, and will make it to keep stable through the pH value of detection paper solution commonly used, normally carries out to guarantee extraction.
(3) filter
After extraction finishes extraction liquid is sent into suction filtration or filtering equipment filtration; The zeyssatite of adding 1% is made flocculating aids during filtration, filters the back and just can make water white pectin dilute solution; Discard filter residue.
(4) concentrate
The filtrating that filtration is obtained places vacuum concentrating apparatus, under 75 ℃ of temperature, concentrates, and is about about 4% until being concentrated to concentration of pectin.
(5) alcohol is analysed
The industrial ethanol spray way to add to the enrichment is good, and the pectin solution cooled to room temperature, the control ethanol content
, stirring constantly.At this moment, pectin is agglomerated into cotton-shaped separating out.
(6) filter
Pectin-alcohol mixture is sent into suction filtration or filter-pressing device and is filtered after the short period of time leaves standstill.Filter cake (pectin) is inferior with 80% ethanolic soln washing
; Use 95% washing with alcohol
inferior again, press dry after washing.Filtrating and washing lotion all should be collected the back and reclaimed ethanol.
(7) dry, pulverizing
The pectin that filter is good places vacuum drier dry in about 45 ℃, is dried to moisture and is less than at 7% o'clock, can pulverize, and crushed material is crossed 0.28 millimeter aperture sieve and got product.
Operations such as in the preparation process, described alcohol is analysed, filters, washed, drying should be carried out in encloses container or environment as far as possible, to reduce the ethanol loss.
Claims (2)
1. prepare the method for pectin from orange peel, it is characterized in that it comprises the following steps:
(1) tangerine peel pre-treatment
Millimeter is big or small natural air drying, selected citrus peel meal to be broken to
; About 40 minutes, make its suction softening with
hot-water soak; In boiling water, soak
again after draining water minute; Go out behind the enzyme orange peel constantly stir wash with flowing water down to washing lotion approaching colourless till.
(2) extraction
Get 100 orange peels handled well of gram, place 3000 milliliters Glass Containers, add 1500 ml tap waters, add 0.5% trisodium phosphate of the water yield again; Under constantly stirring, the pH value of regulating extraction liquid with the mixing acid of hydrochloric acid+0.5% phosphoric acid; Temperature is controlled at about
; Extraction is 30 minutes when adjusting extraction liquid pH value is
; Re-adjustment is 2.5 o'clock to the pH value later on, continues extraction 30 minutes.
(3) filter
After extraction finishes extraction liquid is sent into suction filtration or filtering equipment filtration; The zeyssatite of adding 1% is made flocculating aids during filtration, filters the back and just can make water white pectin dilute solution; Discard filter residue.
(4) concentrate
The filtrating that filtration is obtained places vacuum concentrating apparatus, under 75 ℃ of temperature, concentrates.
(5) alcohol is analysed
In the industrial ethanol is added to the spray means well concentrated and cooled to room temperature pectin solution, the control ethanol content
, stirring constantly.
(6) filter
Pectin-alcohol mixture is after the short period of time leaves standstill; Sending into suction filtration or filter-pressing device filters; Filter cake (pectin) is inferior with 80% ethanolic soln washing
; Use 95% washing with alcohol
inferior again, press dry after washing.
(7) dry, pulverizing
The pectin that filter is good places vacuum drier dry in about 45 ℃, is dried to moisture and is less than at 7% o'clock, can pulverize, and crushed material is crossed 0.28 millimeter aperture sieve and got product.
2. according to claim 1ly a kind ofly prepare the method for pectin from orange peel, it is characterized in that: operations such as in the preparation process, alcohol is analysed, filters, washed, drying should be carried out in encloses container or environment as far as possible, to reduce the ethanol loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105290178A CN102453107A (en) | 2010-10-31 | 2010-10-31 | Method for preparing pectin from orange peels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105290178A CN102453107A (en) | 2010-10-31 | 2010-10-31 | Method for preparing pectin from orange peels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102453107A true CN102453107A (en) | 2012-05-16 |
Family
ID=46036826
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105290178A Pending CN102453107A (en) | 2010-10-31 | 2010-10-31 | Method for preparing pectin from orange peels |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911288A (en) * | 2012-10-23 | 2013-02-06 | 陕西科技大学 | Method for decolouring and purifying pectin |
| CN106749738A (en) * | 2016-12-28 | 2017-05-31 | 佛山市海科知识产权交易有限公司 | A kind of method of extraction and purified polysaccharide from orange peel |
| CN107629144A (en) * | 2017-11-13 | 2018-01-26 | 何会平 | The method that sugar orange cull fruit extracts pectin |
| CN108641012A (en) * | 2018-03-12 | 2018-10-12 | 湖北大学知行学院 | A method of extracting pectin by raw material of wild elephant skin mandarin orange |
| CN110204631A (en) * | 2019-05-17 | 2019-09-06 | 安徽科立普分子生物科技有限公司 | A kind of extraction filters pressing of pectin at quickly discharging material after cake method |
| CN115746164A (en) * | 2022-10-24 | 2023-03-07 | 梅州市飞龙果业有限公司 | Method for extracting active ingredients from orange peel residues |
-
2010
- 2010-10-31 CN CN2010105290178A patent/CN102453107A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911288A (en) * | 2012-10-23 | 2013-02-06 | 陕西科技大学 | Method for decolouring and purifying pectin |
| CN102911288B (en) * | 2012-10-23 | 2014-12-10 | 陕西科技大学 | Method for decolouring and purifying pectin |
| CN106749738A (en) * | 2016-12-28 | 2017-05-31 | 佛山市海科知识产权交易有限公司 | A kind of method of extraction and purified polysaccharide from orange peel |
| CN107629144A (en) * | 2017-11-13 | 2018-01-26 | 何会平 | The method that sugar orange cull fruit extracts pectin |
| CN108641012A (en) * | 2018-03-12 | 2018-10-12 | 湖北大学知行学院 | A method of extracting pectin by raw material of wild elephant skin mandarin orange |
| CN110204631A (en) * | 2019-05-17 | 2019-09-06 | 安徽科立普分子生物科技有限公司 | A kind of extraction filters pressing of pectin at quickly discharging material after cake method |
| CN115746164A (en) * | 2022-10-24 | 2023-03-07 | 梅州市飞龙果业有限公司 | Method for extracting active ingredients from orange peel residues |
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Application publication date: 20120516 |